Automatic electrical announcer.



A. J. W. MUNDEN & J. M. MUIR.

AUTOMATIC ELECTRICAL ANNOUNGER.

APPLIOATIONIILED JUNE 19,1912.

1,1 12,310. Patented Sept. 29, 1914.

4 SHEETS-SHEET 1.

0 iii fiwezz fans THE NORRIS PETERS (10.. PHGTO-LH'HQ. w/wmlvunw. u

A. J. W. MUNDEN & J. M. MUIR.

AUTOMATIC ELECTRICAL ANNOUNCE-R. APPLICATION FILED JUNE 19.1912.

1,1 12,310, Patented Sept. 29, 1914.

4 SHEETS3HEET 2.

A. J. W. MUNDEN & J. M. MUIR.

AUTOMATIC ELECTRICAL ANNOUNOEB. APPLICATION FILED JUNE 19,1912. 1,112,310. Y Patented Sept. 29, 1914.

4 SHEETSSHEET 3.

1H5 NORRIS PETERS 60., PHOTuLITHOH WASHINGTON. D. c.

A. J. W. MUNDEN & J. M. MUIR. AUTOMATIC ELECTRICAL ANNOUNGER.

APPLICATION FILED JUNE 19,1912.

Patented Sept. 29, 1914.

4 SHEETS-SHEET 4.

J .Z7z yen 60 15 I. /uaden War/J78 77212 e '1' Marne 7HE NORRIS PETERSCo., PHOTO-LITHO.. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

ARTHUR JOHN WILLIAM MUNIDEN Aim JoHIv MITCHELL Mom, or DUNEDIN, NEW

ZEALAND. I

AUTOMATIC ELECTRICAL ANNOUNGER.

Specification of Letters Patent. Pateilted sept. 29, 1914:.

- Application filed June 19, 1912. Serial No. 704,662.

Majesty the King of Great Britaimresiding' at Imperial Buildings, 3Dowling street, Dunedin, in the British Dominion of New Zealand, haveinvented certain new and useful Improvements in Automatic ElectricalAnnouncers, and do hereby declare that the following is a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same. i

This invention hasreference to route in dicating apparatus, and itcomprehends, briefly, certain hereinafter described improvements in orrelating to the mechanisms for effecting the requisite movements of theindicator proper, for stopping and reversing such movements, and forannouncing each alteration in thesaid indicator con sequent upon itsmovements.

An embodiment of the invention is indicated in the accompanying drawing,whereof I Figure 1 is a front elevation of the apparatus, with the coverof the casing, wherein it is disposed, removed Fig. 2 is a transversesection taken on line AB, Fig. 1; Fig. 3 is a plan view of Fig. 1;Fig. 4and a are respectively, a plan view of one of the winding rollers, and adetail sectional view of one of the bearings for said roller; Fig. 5 isa transverse section taken on line C-D, Fig. 1; Fig. 6 is a diagrammaticview of the wiring of the apparatus; Fig. 7 is a diagrammatic view ofthe wiring of the annunciator; Figs. 8 and 9 are side elevations showingtwo positions assumed by the armature included in the electro magneticreversing mechanism; Fig. 10 is a perspective view of the apparatus,Fig. 11 is a fragmental front elevation of a modilied form of theinvention; Fig. 12 is a transverse section taken on line EF, Fig. 11;Fig. 13 is a plan view of the armature shown in Figs. 11 and 12; andFig. 11 is a diagrammatic view of the wiring for the aforesaidmodification.

For the purpose of indicating the stopping places, there is employed aband 1, as in other inventions of the sameclass, and this band may bemade of any thin, flexible material, and may have holes 2 punchedtherein, adjacent to one edge and at equal distances apart, to receivethe studs 3 affixed to the central roller 4, whereby motion is impartedby the band to the roller, regularity in the travel of the band isinsured, and puckering of the hand is prevented.

Said band is mounted upon winding rollers 5 and 6. Each of the rollers 5and 6 may be provided at one end, for convenience of mounting, with amovable spring bearing, such bearing consisting, in the constructionillustrated, of'a cap 8, and a plunger 7 whose stem works in saidrcapand is encircled by a spring 9 that bears against a flange 10 onsaidstem. The end ofeachplunger is thus held in engagement with the endof the corresponding roller 5m- 6, to assist in supporting the same andin preventing spinning when thecurrent is cut oil. The said rollers 5and 6 are preferably demountable, so as to facilitate the changing ofthe band to suit different routes, and to accomplish this, they areprovided at the opposite ends from those engaged by the plungers 7 withtongues 5 and 6 designed .to fit in slots formed In the correspondingbearings 5 and 6 these tongues are provided, in turn,

with small lugs 5 andG which project therefrom intosaid hearings, tocenter the rollers with respect to. the driving gear; When the plungers7 are forced inwardlyof their caps, againstthetension of springs 9, theopposite ends of the rollers 5 and 6 are released, whereupon the bandmay be lifted clear of the apparatus.

The apparatus necessary to effect the movementbf the band comprises,briefly, a battery 11 to supply the electric current, conducting wires12, a circuit closer or closers 13,-and a motor 11 to actuatethe rollermechanism. The automatic stop apparatus, Fig. 2, consists of a pair ofelectromagnets 15, a platinum-pointedcontact screw 16, a pivotedarmature 18, and awire 17,-the saidlwire being connected to the magnetsand forming a circuit with the motor through the said screw to saidarmature'by means of a spring 19 attached to the armature. In theconstruction shown, the armature is in the form of a lever pivotallymounted at one end and pro vided at its other end with an insulateddetent'QO, which latter is designed to en- I The circuit closers 13 maybe simple push-buttons, and when one of them is actuated, the magnets 15attract armature 18, thus releasing detent from engagement in seat 23 inroller 4 and making a contact with screw 16, which simultaneouslycompletes the motor circuit. The closing of the latter circuit actuatesthe roller 5 or 6, and transmits motion to band 1 and to roller 4. Onreleasing the push-button, the current is cut off from theelectro-magnets 15, and the armature 18 is pulled back, under theinfluence of an adjustable tension spring 22, into position to engageits detent20 in the other seat 23 in roller 4, which latter continues torevolve until that seat is opposite saiddetent. Further movement isprevented by the disengagement of spring 19 from screw 16, which breaksthe motor circuit until the button is again pressed. The resistance ofthe magnets 15 mut be slightly greater than that of the reversingmagnets 24, Fig. 5, which latter attract the pivoted armature 46, sothat when once the connection is made by armature 18, the greater partof the current is shuntedth-rough the reversing magnets, therebyimmediately energizing them, sufficient magnetism being retained in themag- I as nets 15tohold armature 18 in position until released.

In the modified construction shown in Figs- 11 and-12, the indicatingband 1 travels over a'pair of guide rollers 5 and 6 and is connected atits ends to a pair of winding rollers: 5 and 6 the rollers 5 and 5 beinglocated at the top of the ease wherein the. apparatus is disposed, andthe rollers 6 and 6 at the bottom of such case. During its passagebetween the two guide rollers, the band crosses a small metal .plate 25having an aperture 26 therein, with which aperture a series of equallyspaced apertures 2 in said band successively register. In this form ofthe invention, the armature lever 18, which coacts with the magnets15,has one end 27 extended laterally and provided with a roller 28, theother end 290i said armature being connected toa tension sping 22, sothat when the magnets are deenergized, the said spring will force roller28 through one of the apertures 2 into the aperture 26. This movement ofsaid roller is suflicient to release spring 19 from contact with screw16 and thusabreak the motor circuit, whereupon the band is instantlystopped and is retained in position by the engagement of the rollerteration in the indicator by means of a suitable circuit closer 83, hereshown as constituted by a spring whose free end projects into the pathof a cam 32 on the adjacent end of roller at. When said spring isengaged by said cam, it will be pressed against a contact 33, thuscompleting the circuit. In the modified construction, the circuit closeris constituted by a contact finger 33 which is connected to the end 29of the armature lever 18 (Figs. 12 and 14:), and is moved, consequentupon the attraction of said armature, into contact with a finger 33included in the bell circuit. Means is provided for reversing thedirection of travel of the band, such means being common to both formsand consisting, by pref erence, of a gear t 'ain, (Fig. 5), comprising apair of gears -13 and ll: secured, respectively, to the winding rollers5 and 6, (or 5 and 5), a gear fast on a spindle 47 carried by thearmature 16 of the reversing magnets 24., and a second gear 48 also faston said spindle and meshing with a driving gear 4-9, (Fig. 1), on themotor shaft 50. Armature 46 is normally held in neutral position throughthe agency of springs L6 which engage an extension 11-6 on saidarmature. The gear 45 is designed to mesh alternately with the gears 4:3and 44-, consequent upon the rocking of armature l6, as will beunderstood, while the gear 48 is constantly in mesh with the drivinggear 49. To control the reversing gearing, a suitable switch 51,attached to the case, may be employed. The hell, or other amiunciator30, may also be mounted upon said case, as represented in Fig. 10.

The operation of the appa'atus is believed to be apparent from theforegoing, and, hence, to require no separate explanation.

lVe claim 1. In an indicating apparatus, the combination, with atraveling band, and winding rollers to which the band ends areconnected, each of said rollers being provided with a gear; of a maincircuit; a circuit closer therefor; an electro-magnet included in saidcircuit; an armature associated with saidmagnet; a shunt circuit; amotor, a contact and a pair of reversing magnets included in the shuntcircuit; a gear shiftable alternately in opposite directions by thereversing magnets, to bring it into mesh alternately with the gears onsaid rollers; gear connections between the motor shaft and the shiftablegear for driving the latter; a contact finger carried by said armaturefor engagement with said contact when the first-named magnet isenergized, to close said shunt circuit; and a reversing switch forcontrolling said reversing magnets.

2. In an indicating apparatus, the combination, with a traveling band,and winding rollers to which the band ends are connected, each of saidrollers being provided with a gear; of a main circuit; a circuit closeitherefor; an electro-magnet included in said circuit; an armatureassociated with said magnet; a shunt circuit; a motor, a contact and apair of reversing magnets into mesh alternately with the gears on saidrollers; a contact finger carried by the firstnamed armature forengagement with said contact when the first-named magnet isenergized, toclose said shunt circuit; and a reversing switch for controlling saidreversing magnets.

In an indicating apparatus, the combination, with a traveling indicatingband, and winding rollers to which the band ends are connected, each ofsaid rollers being provided with a gear; of a rocking lever providedwith a gear adapted to mesh alternately with the first-named gears;electro-magnetic means for operating said lever; a motor; gearconnections between said motor and the second-named gear; a shuntcircuit wherein said motor and said lever-operating means are included;an electro-magnetically controlled device A for stopping said band; amain circuit wherein said stopping device is included; a circuit closerfor said main circuit; and means associated with said stopping devicefor closing said shunt circuit when said main circuit is closed.

4. In an indicating apparatus, the combination, with a travelingindicating band, and winding rollers to which the band ends areconnected, each of said rollers being provided with a gear; of a rockinglever provided with a gear adapted to mesh alternately with thefirst-named gears; electromagnetic means for operating said lever; amotor; gear connections between said motor and the second-named gear; ashunt circuit wherein said motor and said leveroperating means areincluded; an electromagnetically said band; a main circuit wherein saidstopping device is included; a circuit closer for said main circuit;means associated with said stopping device for closing said shuntcircuit when said main circuit is closed; a

signal; a signal circuit; and means associatcd with said stopping devicefor closing said signal circuit when said main circuit is closed.

In testimony whereof, we have hereunto set our hands in presence of twosubscribing witnesses. 1

ARTHUR JOHN WILLIAM MUNDEN. JOHN MITCHELL MUIR. Witnesses HELENAMACDONALD, ROBERT PARK, Jr.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). C. 1

controlled device for stopping

